Remove BrowserThread::UnsafeGetBrowserThread, add UnsafeGetMessageLoopForThread.

chrome/browser/external_protocol/external_protocol_handler.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process_impl.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/escape.h"
 
+using content::BrowserThread;
+
 // Whether we accept requests for launching external protocols. This is set to
 // false every time an external protocol is requested, and set back to true on
 // each user gesture. This variable should only be accessed from the UI thread.
 static bool g_accept_requests = true;
 
 namespace {
 
 // Functions enabling unit testing. Using a NULL delegate will use the default
 // behavior; if a delegate is provided it will be used instead.
 ShellIntegration::DefaultProtocolClientWorker* CreateShellWorker(
@@ skipping 243 matching lines @@
 }
 
 // static
 void ExternalProtocolHandler::LaunchUrlWithoutSecurityCheck(const GURL& url) {
 #if defined(OS_MACOSX)
   // This must run on the UI thread on OS X.
   platform_util::OpenExternal(url);
 #else
   // Otherwise put this work on the file thread. On Windows ShellExecute may
   // block for a significant amount of time, and it shouldn't hurt on Linux.
-  MessageLoop* loop = g_browser_process->file_thread()->message_loop();
-  if (loop == NULL) {
-    return;
-  }
-
-  loop->PostTask(FROM_HERE, base::Bind(&platform_util::OpenExternal, url));
+  BrowserThread::PostTask(
+      BrowserThread::FILE,
+      FROM_HERE,
+      base::Bind(&platform_util::OpenExternal, url));
 #endif
 }
 
 // static
 void ExternalProtocolHandler::RegisterPrefs(PrefService* prefs) {
   prefs->RegisterDictionaryPref(prefs::kExcludedSchemes);
 }
 
 // static
 void ExternalProtocolHandler::PermitLaunchUrl() {
   DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type());
   g_accept_requests = true;
 }